Teenage Engineering Speakers OB-4 speakers LIMITED EDITIONSubmerge your eyes and ears in the sublime with the OB 4 magic radio speaker from teenage engineering, a state of the art portable loudspeaker, customised with bespoke Minor Figures lettering and spinning head accessories. Listen using line in, bluetooth, FM radio, or get creative with disk mode in ambient, karma, metronome, noise, and loop settings. OB4 memorises everything you play on an endless looping tape, so you can rewind the radio and remix